12158-2321 BU 920 (HD 106612)
12h 15m 46.68s -23° 21' 13.9" P.A. 307.00 sep 1.9 mag 6.86,8.22 Sp F7V dist. 69.59 pc (227 l.y.)
| Coord 2000 |
12158-2321 |
|
Discov num |
BU 920 |
|
Comp |
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Coord arcsec 2000 |
12 15 46.68 -23 21 13.9 |
|
| Date first |
1879 |
|
Date last |
2020 |
|
Obs |
71 |
|
| Pa first |
52 |
|
Pa last |
307.1 |
|
P.A. Now (θ) |
307.1° |
|
| Sep first |
0.8 |
|
Sep last |
1.91 |
|
Sep. Now (ρ) |
1.91" |
|
| Mag pri |
6.86 |
|
Mag sec |
8.22 |
|
delta mag (ΔM) |
1.36 |
|
Spectral class |
F7V (yellow-white) |
|
| Pri motion ra |
-009 |
|
Sec motion ra |
-009 |
|
| Pri motion dec |
-039 |
|
Sec motion dec |
-039 |
|
| Notes |
N
O
(See Notes, Orbital solution) |
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This double is physical.
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 106612 |
|
Constellation |
Corvus |
|
SAO |
180619 |
|
HIP |
59801 |
|
| Tycho2 |
6668-00972-1 |
|
Gaia DR2 |
3489916190792497280 |
|
HD |
106612 |
|
HR |
4661 |
|
| GC |
16739 |
|
ADS |
8481 |
|
BD |
BD-22 3322 |
|
CD |
CD-22 9344 |
|
| CP |
CP-22 5270 |
|
Distance |
69.59 |
|
Distance ly |
227 |
|
ORBITAL ELEMENTS
| Period (P) | 2089.1431y | ± 1015.7624 |
Periastron (T) | 2138.8646y | ± 339.8961 |
Semi-major axis (a) | 10.29786a | ± 5.46269 |
| Eccentricity (e) | 0.87556 | ± 0.10176 |
Inclination (i) | 85.768° | ± 3.848 |
Longitude of periastron (ω) | 243.88° | ± 47.826 |
| Node (Ω) | 140.973° | ± 17.891 |
Notes | n | |
Reference | Izm2019 | |
| Equinox | | |
Last observation | 2014 | |
Grade | 5 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
303.6 |
1.787 |
| 2001 |
303.8 |
1.797 |
| 2002 |
304.0 |
1.808 |
| 2003 |
304.2 |
1.818 |
| 2004 |
304.4 |
1.829 |
| 2005 |
304.6 |
1.839 |
| 2006 |
304.8 |
1.850 |
| 2007 |
304.9 |
1.860 |
| 2008 |
305.1 |
1.871 |
| 2009 |
305.3 |
1.881 |
| 2010 |
305.5 |
1.891 |
| 2011 |
305.7 |
1.902 |
| 2012 |
305.9 |
1.912 |
| 2013 |
306.0 |
1.922 |
| 2014 |
306.2 |
1.932 |
| 2015 |
306.4 |
1.942 |
| 2016 |
306.6 |
1.953 |
| 2017 |
306.7 |
1.963 |
| 2018 |
306.9 |
1.973 |
| 2019 |
307.1 |
1.983 |
| 2020 |
307.2 |
1.993 |
| 2021 |
307.4 |
2.002 |
| 2022 |
307.6 |
2.012 |
| 2023 |
307.7 |
2.022 |
| 2024 |
307.9 |
2.032 |
| 2025 |
308.0 |
2.041 |
| 2026 |
308.2 |
2.051 |
| 2027 |
308.3 |
2.061 |
| 2028 |
308.5 |
2.070 |
| 2029 |
308.6 |
2.079 |
| 2030 |
308.8 |
2.089 |
|
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Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
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Measures: green=micrometric, blue=interferometric, purple=photographic |
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